DV-600SDV-600H10-2FLOW CHART NO.9The operation from the remote control is disabled.Although the operation on the deck is possible, theremote control operation is disabled.No Replace the remote control transmitter (take propermeasures as necessary).Yes NoIs 5V voltage supplied to the pin 3 terminal ofremote control receiver? Check AT 5V line.Yes NoIs 'L' pulse signal generated from the pin 1 terminalof receiver when the remote control transmitter isoperated?Replace the remote control receiver.YesNoIs pulse signal supplied to the pin 32 of IC504? Check the line between the remote control receiverand the IC504 pin 32.YesReplace IC504.FLOW CHART NO.10AUDIO 9V is not output.Is 12V voltage supplied to the IC9001 pin 3? No Check the secondary circuit AT 12V line.YesIs there output to the IC9001 pin 1? No Check the IC9001 periphery circuit and AT 12V line.Refer to the flow chart No.2 turned on>.Replace Q9001.FLOW CHART NO.11PC 3.3V is not output.NoIs 5V voltage supplied to the IC9003 pin 1? Check the secondary circuit AT 5V line.YesIs there output to the IC9003 pin 2? No Check the IC9003 periphery circuit and AT 5V line.YesCheck for load circuit short-circuiting or leak.NoCheck the periphery circuit when Q9001 is heated.YesIs 9V voltage output to the Q9001 collector?NoCheck for load circuit short-circuiting or leak. NoFLOW CHART NO.12The disc tray cannot be opened and closed.NoIs the signal from the IC504 pins 70 and 69 inputinto the IC702 pins 6 and 7?Check the LD-REV/FWD signal line between theIC702 and the IC504.YesNoIs the loading motor drive voltage output from theIC702 pins 10 and 11?Is 8V voltage applied to the IC702 pin 21?YesNoIs the loading motor drive voltage applied to theAG connector pins 3 and 2?Check the line between the IC702 and the AG connector.YesYesCheck for mechanism and gear engagement andbreakage.Replace IC702.Check AT 8V line.NoYesCheck the connection of optical pickup cable.If it is normal, replace the optical pickup.NoNoIs the Q301 (LD POWER ON) drive signal (SEL)output to the IC707 pin 52?Is the Q307 (LD POWER CTL) drive signal (LDO1)output to the IC303 pin 45?(Checking of symptom)Is 3.3V voltage applied to the Q301 emitter? Is 5Vvoltage applied to the Q307 emitter?YesYesAre 3.3V and 2.3V voltages applied to the ABconnector pin 11 and 9, respectively?Check the D 3.3V (1) line and the A 5V line.FLOW CHART NO.15The disc is ejected.(When the laser beam does not light.)Check the line between the IC707 pin 52 and the Q301base through Q304.heck the line between the IC303 pin 45 and the Q307 base.No Check the line between the Q301 and Q307, AB connector.NoNoNoYesIs FE signal input into the IC707 pin 38?(Checking of symptom)Check the line between the IC303 pin 21 and the IC707 pin 38.YesYesIs the focus control signal output to the IC707 pin 43? Check the IC707 power source periphery circuit.If it is normal, replace IC707.Is the focus control signal from the IC504 pin 43input into the IC702 pin 19?Check the focus control signal (FOO) line between theIC702 and the IC504.YesNo Check the line between the IC702 and the AB connector.NoIs the focus control drive voltage output from theIC702 pins 17 and 18?YesIs the focus control drive voltage applied to the ABconnector pins 4 and 2?YesCheck the connection of optical pickup cable.If it is normal, replace the optical pickup.NoNoNoNoThe disc is ejected.(In case of focus error)Does the optical pickup move up and down after thedisc is removed? (Checking of symptom).Refer to (When the focus servo does not function).YesYes YesIs FE signal output to the IC303 pin 21 when thedisc is set?Is there input signal on the IC303 pins (49, 54), (50, 55),(46, 52), and (47, 53)?Is there output signal on the IC301 pins 18, 17, 16, and 15?Check the connection of optical pickup cable.If it is normal, replace the optical pickup.FLOW CHART NO.13FLOW CHART NO.14The disc is ejected.(In case of focus error)Is 8V voltage applied to the IC702 pin 21?YesReplace IC702.Check AT 8V line.No
